Folks,

Between about 10:30 PM and 6:34 AM on the night of September 13-14, my
rooftop microphone in Cleveland Heights detected over 2300 calls in the
thrush frequency range and about 90 calls in the higher frequency
warbler/sparrow range. I'm new at night flight recording, but I gather
this is an exceptionally high number of detections. As I previously
posted, I detected over 400 thrush calls the previous night (September
12-13) as well. On Wednesday, September 15, Julie West banded over 20
thrushes at the Nature Center at Shaker Lakes (3/4 mile southeast of my
house), after having banded 18 on the 13th.

Interestingly, folks monitoring night flight calls farther east in
upstate New York detected a very large number of calls (characterized as
representing the largest single-night movement in 20 years) in
warbler/sparrow range on the night of September 10/11. My microphone was
not operating that night, but winds here were quite different from those
farther east and probably not as favorable.

Sorry for posting this so late. One of the things I'm discovering about
night flight call recording is that analyzing the data you collect is
labor-intensive.

Laura Gooch
Cleveland Heights


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